IC 2391

(MWSC 1529; FoF 2438; OCSN 204)

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0.97 UTI
0.84
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
C3 classification AA
Number of members (P>50%) 342
Radius (P>50% members) 48.3 [arcmin]
  • CN 0.84 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 1.0 Very well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
IC 2391 is a rich, very dense object of very high C3 quality. Its parallax locates it at a very close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is very well-studied in the literature.
Very close Low extinction Near-solar metallicity Young

Almeida et al. (2025)
Mass determination: good fit. Isochrone match: good fit. Gold sample.

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for IC 2391 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 130.302 -53.015 6.606 -24.741 23.324 14.412
Li et al. 2025 130.292 -52.991 6.582 -24.644 23.316 –
Almeida et al. 2025 130.382 -53.001 – – – –
Alfonso et al. 2024 130.301 -53.023 6.592 -24.764 23.371 –
Hunt & Reffert 2024 130.26 -53.042 6.622 -24.797 23.267 13.458
Celli et al. 2024 130.292 -52.991 – – – –
Cavallo et al. 2024 130.467 -53.066 6.621 – – –
Hunt & Reffert 2023 130.26 -53.042 6.622 -24.797 23.267 13.458
Almeida et al. 2023 130.768 -53.089 – – – –
Qin et al. 2023 130.17 -53.13 6.63 -24.77 23.41 14.78
Just et al. 2023 130.061 -53.025 – – – –
He et al. 2022 130.332 -53.057 6.613 -24.786 23.33 –
Jaehnig et al. 2021 130.202 -52.97 6.616 -24.702 23.382 –
Rain et al. 2021 130.292 -52.991 6.582 -24.644 23.316 –
Dias et al. 2021 130.382 -53.001 6.572 -24.764 23.278 15.204
Cantat-Gaudin et al. 2020 130.292 -52.991 6.582 -24.644 23.316 –
Cantat-Gaudin & Anders 2020 130.292 -52.991 6.582 -24.644 23.316 –
Liu & Pang 2019 130.175 -53.014 6.559 -24.65 23.304 –
Bossini et al. 2019 130.292 -52.991 – – – –
Soubiran et al. 2018 130.292 -52.991 – – – 15.29
Cantat-Gaudin et al. 2018 130.292 -52.991 6.582 -24.644 23.316 –
Yen et al. 2018 130.12 -53.167 6.74 -24.51 23.28 –
Loktin & Popova 2017 130.14 -53.032 – -24.97 22.7 14.6
Kharchenko et al. 2016 130.061 -53.025 – – – –
Dias et al. 2014 130.133 -53.033 – -3.23 4.07 –
Kharchenko et al. 2013 130.065 -53.028 – -24.2 23.42 14.6
Gozha et al. 2012 130.133 -53.033 – – – –
Piskunov et al. 2008 130.143 -53.026 – – – –
Kharchenko et al. 2007 130.14 -53.03 – 1.25 – 16.04
Piskunov et al. 2007 130.143 -53.026 – – – –
van den Bergh 2006 130.15 -53.033 – – – –
Kharchenko et al. 2005 130.14 -53.03 – -24.19 23.48 16.04
Kharchenko et al. 2003 130.05 -53.05 – -25.16 22.23 –
Chen et al. 2003 130.05 -53.069 – – – –
Dias et al. 2002 130.133 -53.033 – -24.97 22.7 14.49
Dambis 1999 130.133 -53.033 – – – –

💡 Note: The UCC values are estimated from its identified members.

Reference Year Dist [kpc] Av [mag] DAv [mag] Age [Myr] [Fe/H] [dex] Mass [Msun] Bfr BSS
Li et al. 2025 0.14 0.11 – 59 -0.045 – – –
Almeida et al. 2025 0.15 0.16 – 49 – 139 – –
Alfonso et al. 2024 0.15 0.04 – 40 0.001 – – –
Hunt & Reffert 2024 – – – – – 169* – –
Celli et al. 2024 – – – 29 – 160 – –
Cavallo et al. 2024 0.15 0.49 – 45 0.160 – – –
Hunt & Reffert 2023 0.15 0.09 0.47 27 – – – –
Almeida et al. 2023 0.15 0.09 – 58 0.124 215* 0.22 –
Qin et al. 2023 0.16 0.19 – 40 – – – –
Just et al. 2023 – – – 112 – 5 – –
He et al. 2022 – 0.40 – 63 – – – –
Jaehnig et al. 2021 0.15* – – – – – – –
Rain et al. 2021 0.15 0.09 – 36 – – – 0
Dias et al. 2021 0.15 0.16 – 49 0.000 – – –
Cantat-Gaudin et al. 2020 0.15 0.04 – 29 – – – –
Cantat-Gaudin & Anders 2020 0.15 – – – – – – –
Liu & Pang 2019 – – – 41 0.000 – – –
Bossini et al. 2019 0.15 0.09 – 36 0.000 – – –
Soubiran et al. 2018 0.15 – – – – – – –
Cantat-Gaudin et al. 2018 0.15 – – – – – – –
Yen et al. 2018 0.16 0.18 – 81 – – – –
Loktin & Popova 2017 0.18 0.02 – 46 – – – –
Kharchenko et al. 2016 0.17 0.16 – 112 – – – –
Kharchenko et al. 2013 0.17 0.16 – 112 -0.155 – – –
Gozha et al. 2012 0.17 – – 46 -0.010 93 – –
Piskunov et al. 2008 0.18 0.03 – 76 – 284* – –
Piskunov et al. 2007 0.18 0.03 – 76 – 175 – –
van den Bergh 2006 0.17 0.03 – 46 – – – –
Kharchenko et al. 2005 0.18 0.03 – 76 – – – –
Kharchenko et al. 2003 0.15 – – – – – – –
Chen et al. 2003 0.17 0.02 – 40 -0.090* – – –
Dias et al. 2002 0.17 0.02 – 46 -0.010 – – –
Dambis 1999 0.14 0.01 – 50 – – – –

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Visualization
ℹī¸
IC 2391 UCC
IC 2391 HUNT23
IC 2391 CANTAT20
Galactocentric position diagram